Since Team Rocket arent a large part of the franchise anymore, frequently being replaced by other teams like Aqua, Magma, Galactic (and the list goes on), theyve aged since weve last saw them, and thereby, their rarity is going up, too
Still, the Battle side is the kind of thing that helps you win a longer game
rolling [CHAOS] will still cause these abilities to trigger
The Space Stone makes a lot of sense for a more cosmic-themed set
In general, I would look at these two factors when looking to include cards not of your tribe's creature type: Is this creature so strong that it, on its own, is generally stronger than my tribal creatures when they are receiving bonuses and/or empowering my other cards